Just to throw in another data point.

        Here is that FTP done between an IBM S80 and an M80, both with GB
interfaces:

ftp> put "|dd if=/dev/zero bs=32k count=10000" /dev/null
200 PORT command successful.
150 Opening data connection for /dev/null.
10000+0 records in.
10000+0 records out.
226 Transfer complete.
327680000 bytes sent in 13.25 seconds (2.414e+04 Kbytes/s)
local: |dd if=/dev/zero bs=32k count=10000 remote: /dev/null


Ben